The Future of American Defense
U.S. forces were shaped for conflict with a superpower. The emerging multilateral world calls for a smaller, more flexible and far less expensive military
Features
Sulfate Aerosol and Climatic Change
Industrial emissions of sulfur form particles that may be reflecting solar radiation back into space, thereby masking the greenhouse effect over some parts of the earth
The Molecular Architects of Body Design
Putting a human gene into a fly may sound like the basis for a science fiction film, but it demonstrates that nearly identical molecular mechanisms define body shapes in all animals
When Is Seeing Believing?
Digital technology for manipulating images has subverted the certainty of photographic evidence
Liquid Mirrors
Light, liquid-mercury mirrors, which can potentially be made much larger than glass mirrors, may enable astronomers to construct enormous telescopes and see farther than ever before
AIDS and the Use of Injected Drugs
The AIDS epidemic continues to grow among drug users who inject. It could be curbed if governments more readily adopted effective prevention programs
The Terror Birds of South America
These huge, swift creatures were the dominant carnivores of the continent for millions of years, until competitors drove them into extinction
Particle Metaphysics
In the aftermath of the Superconducting Super Collider's death, physicists are divided over how--or even whether--they should continue their search for a unified theory of nature
Departments
- Letters
Letters to the Editors, February 1994
Errata
- Recommended
Book Reviews--Old Blue Eyes
- 50, 100 & 150 Years Ago
50 and 100 Years Ago: Synthetic Rubber and Telephone Patent Expired
- Profile
Laid-Back Leader Rattles the Academy
- Amateur Scientist
Making a Mirror by Spinning a Liquid
- Science and the Citizen
Nobel Notes
Reflections in a Quantum Well
Too Little, Too Late?
No Global Warming?
Fertile Ground
Design for Living
Time-Trippers Beware
- Departments
Paying for Light at the End of the Chunnel
AIDS and Population "Control"
- Technology and Business
Dr. Big Brother
Extra! Extra!
Heads in the Cloud
Pipe Dream
A Blade of Grass